Kill obsolete funding channels

README.md

@@ -1,5 +1,4 @@
 [![License GPL 3][badge-license]](http://www.gnu.org/licenses/gpl-3.0.txt)
-[![Liberapay](https://liberapay.com/assets/widgets/donate.svg)](https://liberapay.com/bbatsov/donate)
 [![Patreon](https://img.shields.io/badge/patreon-donate-orange.svg)](https://www.patreon.com/bbatsov)
 
 Emacs Prelude
@@ -17,13 +16,8 @@ advised to always run Prelude with the latest Emacs - currently
 **26.1**.
 
 You can support the development of Prelude via
-[PayPal](https://www.paypal.me/bbatsov),
-[Salt](https://bountysource.com/teams/prelude),
-[Patreon](https://www.patreon.com/bbatsov) and
-[Liberapay](https://liberapay.com/bbatsov/donate).
-
-[![Liberapay](https://liberapay.com/assets/widgets/donate.svg)](https://liberapay.com/bbatsov/donate)
-[![Patreon](https://img.shields.io/badge/patreon-donate-orange.svg)](https://www.patreon.com/bbatsov)
+[PayPal](https://www.paypal.me/bbatsov) and
+[Patreon](https://www.patreon.com/bbatsov).
 
 ## Fast Forward
 

doc/contributing.md

@@ -50,9 +50,5 @@ If you want to make changes to the manual's page structure you'll have to edit
 ## Donations
 
 You can support the development of Prelude via
- [Salt](https://salt.bountysource.com/teams/prelude),
- [Patreon](https://www.patreon.com/bbatsov) and
- [Liberapay](https://liberapay.com/bbatsov/donate).
-
-[![Liberapay](https://liberapay.com/assets/widgets/donate.svg)](https://liberapay.com/bbatsov/donate)
-[![Patreon](https://img.shields.io/badge/patreon-donate-orange.svg)](https://www.patreon.com/bbatsov)
+[PayPal](https://www.paypal.me/bbatsov) and
+ [Patreon](https://www.patreon.com/bbatsov).

doc/index.md

@@ -13,10 +13,8 @@ Emacs power users.
     advised to always run Prelude with the latest Emacs - currently **26.1**.
 
 You can support the development of Prelude via
-[PayPal](https://www.paypal.me/bbatsov),
-[Salt](https://bountysource.com/teams/prelude),
-[Patreon](https://www.patreon.com/bbatsov) and
-[Liberapay](https://liberapay.com/bbatsov/donate).
+[PayPal](https://www.paypal.me/bbatsov) and
+[Patreon](https://www.patreon.com/bbatsov).
 
 ## Philosophy